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3 years ago

15

HI all!Pls answer my 2 simple questions...Thanks in advance....

1 answer:

kakasveta [241]3 years ago

5 0

Explanation:

I researched that for you

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Why is it advisable to use a small value for the incidence angle when performing a glass prism experiment

sweet-ann [11.9K]

FOCAL LENGTH = 9.5cm i° e° d° 30 43 69 40 41 61 45 39 56 50 37 48 65 41 37 plot a graph of d° against i° from the graph Determine; (i) the minimum deviation and the corresponding angle of incidence (ii) the maximum deviation and the corresponding angle of incidence n=sin⁡(A+D÷2)÷(sinA÷2) Determine the error in n and explain why it is not advisable to use small values of i° in performing this experiment.

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4 years ago

A truck’s engine produces 20,000 N of force. It dumps its load and its mass is reduced to 10,000 kg. What is the acceleration of

spayn [35]

Explanation:

If $F = m*a$ , we can easily solve for a.

$a = 20000/10000$

7 0

3 years ago

A feather of mass 0.001 kg falls from a height of 2 m. Under realistic conditions, it experiences air resistance. Based on what

snow_tiger [21]

As per initial given conditions first we will find the initial potential energy of the feather

$U = mgh$

$m = 0.001 kg$

$g = 9.8 m/s^2$

$h = 2m$

$U = (0.001kg)(9.8 m/s^2)(2m)$

$U = 0.0196 J$

now we know that few amount of its initial energy is lost in form of frictional energy loss

so remaining energy will be less than the initial potential energy

So final answer would be

<u><em>A. KE < 0.0196 J</em></u>

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3 years ago

A golfer takes three putts to get the ball into the hole. The first putt displaces the ball 3.32 m north, the second 1.57 m sout

bixtya [17]

Answer:

The answer to the question is

The magnitude of the displacement needed to get the ball into the hole in just one putt is 1.746m in the direction of 23.41° north east

Explanation:

With trigonometric relation and the attached diagram we have

From the diagram the location of the hole is 3.32m- (1.57 cos45 +0.78co45)m North and

1.57sin 45 – 0.78 sin 45 meters west

1.658m north and

0.55m east

Thus the direction of the hole is 26.41 degrees

North east

The magbitude of the displacement is displacement is gotten from the relation diplacement of x and y =√(x²+y²)

$\sqrt{1.658^{2} +0.55^{2} } = 1.746 m$ ∠26.41°

3 0

3 years ago

Describe how temperature affects the rate of a reaction

MariettaO [177]

Cold temperatures will usually slow it down while warm temperatures may speed up.

5 0

3 years ago

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